<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>动态生成表格</title>
    <style>
        table {
            width: 500px;
            margin: 100px auto;
            border-collapse: collapse;
            text-align: center;
        }

        td,
        th {
            border: 1px solid #333;
        }

        thead tr {
            height: 40px;
            background-color: #ccc;
        }
    </style>
</head>

<body>
    <table cellspacing="0">
        <thead>
            <tr>
                <th>姓名</th>
                <th>科目</th>
                <th>成绩</th>
                <th>操作</th>
            </tr>
        </thead>
        <tbody>

        </tbody>
    </table>
    <script>
        var datas = [
            {
                name: '请记得',
                subject: 'js',
                score: '100'
            },
            {
                name: '请记分隔符得',
                subject: 'js',
                score: '90'
            },
            {
                name: '二个人',
                subject: 'js',
                score: '75'
            },
            {
                name: '饿过了',
                subject: 'js',
                score: '85'
            }
        ];
        // 2. 往tbody 里创建行 有几个数据 就创建几行
        var tbody = document.querySelector('tbody')
        for (var i = 0; i < datas.length; i++) {
            //  创建 tr 行
            var tr = document.createElement('tr')
            tbody.appendChild(tr)
            // 在行里面创建单元格td
            for (var k in datas[i]) {
                // 创建单元格
                var td = document.createElement('td');
                // console.log(datas[i][k]);
                td.innerHTML = datas[i][k];
                tr.appendChild(td);
            }
            // 创建有删除两个字的单元格
            var td = document.createElement('td')
            td.innerHTML = '<a href="javascript:;">删除</a>';
            tr.appendChild(td)
        }
        // 4.删除操作
        var as = document.querySelectorAll('a')
        for (var i = 0 ;i < as.length; i++) {
            as[i].onclick = function() {
                tbody.removeChild(this.parentNode.parentNode)
            }
        }
    </script>
</body>

</html>